A curable polyurethane type resin composition which is applicable for a sealing material for an electrical device used in a vehicle, enhances a hydrolysis resistance of a cured substance and can suppress a decrease in physical properties in high temperature and high moisture environments. The curable polyurethane type resin composition contains castor oil-type polyol, polyisocyanate, and epoxidized acrylic polymer. The electrical device has electrical components covered with a sealing material consisting of a cured substance of the curable polyurethane-type resin composition.
Legal claims defining the scope of protection, as filed with the USPTO.
1. An electrical device comprising: electrical components and a sealing material, wherein the electrical device has the electrical components covered with the sealing material consisting of a curable polyurethane-type resin composition containing castor oil-type polyol, polyisocyanate, and epoxidized acrylic polymer having a content of 10 mass parts to 80 mass parts, relative to a 100 mass parts of the castor oil-type polyol.
2. The electrical device according to claim 1 , wherein the epoxidized acrylic polymer has an average molecular weight of 10000 or less.
3. The electrical device according to claim 1 , wherein the epoxidized acrylic polymer has a content of epoxy groups, per unit mass part, of 0.5 milliequivalent per g to 1.7 milliequivalent per g.
4. The electrical device according to claim 2 , wherein the epoxidized acrylic polymer has a content of epoxy groups, per unit mass part, of 0.5 milliequivalent per g to 1.7 milliequivalent per g.
5. An electrical device comprising: electrical components and a sealing material, wherein the electrical device has the electrical components covered with the sealing material consisting of a curable polyurethane-type resin composition containing castor oil-type polyol, polyisocyanate, and epoxidized acrylic polymer, and wherein the epoxidized acrylic polymer has a content of epoxy groups, per unit mass part, of 5 milliequivalent to 136 milliequivalent per 100 mass parts of the castor oil-type polyol.
6. The electrical device according to claim 5 , wherein the epoxidized acrylic polymer has an average molecular weight of 10000 or less.
7. The electrical device according to claim 4 , wherein the epoxidized acrylic polymer has a content of epoxy groups, per unit mass part, of 5 milliequivalent to 136 milliequivalent per 100 mass parts of the castor oil-type polyol.
8. The electrical device according to claim 3 , wherein the epoxidized acrylic polymer has an average molecular weight of 10000 or less.
9. The electrical device according to claim 1 , wherein the epoxidized acrylic polymer has a content of epoxy groups, per unit mass part, of 5 milliequivalent to 136 milliequivalent per 100 mass parts of the castor oil-type polyol.
10. The electrical device according to claim 8 , wherein the epoxidized acrylic polymer has a content of epoxy groups, per unit mass part, of 5 milliequivalent to 136 milliequivalent per 100 mass parts of the castor oil-type polyol.
11. The electrical device according to claim 9 , wherein the epoxidized acrylic polymer has an average molecular weight of 10000 or less.
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April 17, 2017
July 21, 2020
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